Door lock



May 11,1943.

E. v. KIDDER DOOR LOCK 2 Sheets-Sheet 2 wirf @am f Filed Aug. 23, 1940ICF-(1,

f O t0):

N I Bnpentor 'Ez/@5v5 K /f/Dafe Patented May 1l, 1943 Doon Loox EugeneV. Kidder, Los Angeles, Calif., assignor to Harry E. Fendring, LosAngeles, Calif.

Application August 23, 1940, Serial No. 353,798

8' Claims.

My invention relates to a lock particularly adapted for doors. f

One of the principal objects of this invention is to provide a lock ofthis class which is particularly simple and economical of construction,one which may be readily and economically installed, and one which isdurable and which will not readily deteriorate or get out of order.

An important object also of this invention is the provision of a noveland simple latch bolt mechanism and knobs which may be readily installedand effectively operated even though the several elements are notproperly aligned, or even if the several parts are considerably out ofline.

Another important object of this invention is to provide a noveloperative connection between the inner end of the bolt operatingmechanism and the knobs, whereby the latter may be easily connected tothe former by depressing the bolt and inserting the retracting means ofthe knob.

A further important object of this invention is to provide a novel andsimple means for locking or blocking the bolt against withdrawal orretraction. f

' A still further important object of this inven- "tion is to provide anovel arrangement for unlocking from one side of the door the unlockingor locking means at the other side.

Still another important object of this invention is to provide novel andsimple means for retaining the knobs in position on the door as well ascentralizing or neutralizing the knobs after the same are operated. v

It is also an object of this invention to provide novel and simple meansfor covering otherwise exposed bolt or screw heads.

An important object also of this invention is to provide a lock of thisclass which may be used as an outside door lock and in which featuresthereof may be also used as an inside or room door latch or lock. Y

'With these and other objects in view, as will appear hereinafter, Ihave devised a door lock having certain novel features lof construction,as will be hereinafterdescribed in detail and particularly set forthinthe appended claims, reference being had to the accompanying drawingsand to the characters of reference thereon, which form a part of thisapplication, in which:

Fig. 1 is a transverse section of the free edge of a door showing mylock, in a preferred form of construction. installed therein` portionsbeing broken .away and in section to facilitate the illustration, thesectional portion being taken substantially at I I of Fig. 2;

' Fig. 2 is a fragmentary sectional view thereof, taken through 2 2 ofFig. 1;

` Fig. 3 is a fragmentary edge view of the door showing the latch-boltand housing;

Fig; 4 is an elevational view of the inner end plates.

the opposite sides of the door I, the axes beingA of the bolt means,showing its relationto the adjacent ends of the hubs of the knobs, takenat 4 4 of Fig. 1;

Fig. 5 is a fragmentary sectional elevational view thereof, takenthrough 5 5 of Figrl, showing essentially the bolt mechanism; and, y

Figs. 6, '7, 8, 9, and 10 are transverse sectional views takenrespectively through 6 6, 1 1, 8 3, 9 9, and IIJ-IIJ of Fig. 2.

The latch bolt mechanism consistsessentially of a bolt housing I, a bolt2, a boltretracting member 3, and a compression spring 4.

The bolt housing I is located in a hole D1 provided in the outer edge ofthe door D.A Theouter end of the housing has a plate portion l whichiits into a mortised recess Dla at the-free Aedge of the door. The edgesof the plate portion la. are preferably bevelled inwardly to insure atight iit in the recess. The `plate portion has inwardly extendingprongs Ib` at its inner side which may be driven into the door forsecuring the housing I into place.

v The bolt is reciprocally mounted in the hous-` ing and isnormallyforced outward bythe compression spring 4. The bolt is preferably madehollow and is provided witha transverse pin .2- near its inner end. Theforward or outer end of the bolt retracting or operating member 3 ismounted on the pin 2 in such a manner that the member 3 may be movedlaterally with respect to the bolt and the housing, as indicated bydotted lines. The inner end of the housing has a transverse slot IF,through whichvthe bolt operating member 3v extends and which permits thelateral movement of the member 3.

The portion of the boltoperating member 3 which extends inwardly fromvthe housing I is provided with box-like structures 3a at the oppo. sitesides of its inner end. The, extreme Ainner end of the member 3 haslaterally extending anges` 3b which are engaged by suitable means fordrawing the member inwardly, as willfbe In the drawings, I Vhaveshown-two knobs Il.

and I2 having hubs Ila and |21. These knobs are axially aligned and areseparately rotatably mounted in annular flanges or bearings I3@ and I 4aat the central portions of escutcheon plates or discs I3 and I4. Theseannular flanges extend.

into the opposite ends of a transverse bore D2 of the door, and therebylocate the escutcheon. 'Ihese escutcheon plates are secured`v at atright angles to the latch bolt mechanism. These plates are securedtogether by bolt and nut means, as shown. The nuts consist of tubular..

members I5 which are secured and extend inwardly from the escutcheonplates I4, which are preferably located at the outside of the door. The

bolts or screws I6 of the bolt and nut meansV extend through the otherescutcheon plates and into the nuts I5. The bolts and nuts extendthrough holes D3 in the door, which holes are spaced from the bore D2.

The tubular nuts I5 prevent the escutcheon within the bearings of theescutcheon plates by "f set screws 2| which are provided in the bossesor annular anges of the escutcheon plates and which extend with theirinner ends into circumferential grooves IIb and |21'. The knobs arecentered or held in neutral positions by compression springs 22 and 23,a part of which is positioned in each of the grooves. The adjacent endsof the springs of each pair are located at the opposite sides of the setscrew 2l, while the other ends abut against the ends of the grooves, asshown best in Fig. 7.

In this manner, the knob assumes a neutral position in which bothsprings 22 and 23 are under the same compression.

To facilitate assembly of the springs in the grooves of the hub, I haveprovided a tool, shown by dotted lines and designated 24 in Fig. 6. Thistool is in the form of a Spanner wrench and is provided with spaced lugswhich are adapted to be inserted into holes designated IIc and IId inFig. 6. The springs are located in the grooves between the ends thereofand between the pins extending through the holes I Ic and I Id. When thehubs are assembled in the escutcheon plates and the screws 2I inserted,the tool 24 is removed.

The inner ends of the hubs are provided with bolt actuating lugs I Ieand I 2e which extend into the box-like structure 3a at the inner end ofthe bolt actuating member 3. 'I'hese lugs are segmental in shape, asindicated in Fig. 5, and are formed by cutting off the major portion ofone side of a reduced inner end of the hubs, thereby providing eccentriclugs. The fiat side of these eccentric segmental lugs are positionedagainst the inner or front sides of the laterally extended flanges 3b atthe inner end of the bolt actuating member. Thus, rotation of the knobsin either direction causes the ends of the lugs to force the boltactuating member inwardly and thereby retract the bolt.

The bolt actuating member is prevented from being drawn inwardly bylocking rods 3l and 32, axially aligned with and reeiprocally mounted inthe knobs II and I2. Both locking rods are arranged to be forcedinwardly so that their inner ends are located behind the bolt actuatingmember and thereby prevent the inward movement of the latter. In thehubs of both knobs are ball checks 33 which are arranged to enter one oftwo depressions Nin the locking rods, the depressions in the rod 3|being designated 3|a and 3|", and the depressions in the rod 32 beingdesignated 32*l and 32h. These ball checks are forced toward the lockingrods by springs 34, which are held in position by plugs 35.

The locking rod 3| is forced into locking position by forcing inwardlythe outer end of the locking rod which extends axially from the knob II.The outer locking rod 32 is forced inwardly by a latch 35 which extendsupwardly through the under side of the hub I2a into an elongated notch32c in the locking rod 32.

The locking rods 3l and 32 are drawn outwardly or free from the innerend of the bolt actuating member by suitable manual means, thewithdrawal of the locking rod 3| in the inside knob being by means of alatch, whereas the withdrawal of the locking rod 32 in the outside knobbeing by means of a tumbler lock.

The locking rod withdrawing latch is here shown as consisting of a ring4I, encircling the hub of the inner knob II, and a pin 42 extendingdiametrically across the ring. The pin extends through and is xed in therod 3| so that shifting of the ring 4I shifts also the rod. The knob IIis provided with an annular recess I If at its inner side for receivingand substantially concealing the latch ring 4I when the rod 3| iswithdrawn.

In the outer knob I 2 is located the tumbler lock 5I, having a plug Sla.This plug 5Ia is provided at its inner end with a wedge cam 52 which isadapted to engage a pin 53 at the inner end of the outer locking rod 32.When the locking rod 32 is forced into its inward position by the latch36, the pin 53 engages the end of the wedge cam 52, and rotation 0f theplug 5Ia by the key 54 in a clockwise direction causes the locking rod32 to be drawn outwardly free from engagement with the bolt actuatingmember 3.

If either of the locking rods 3I or 32 is shifted to its inner orlocking position, it is diicult to eject or shift the same to itsunlocked position from the opposite side of the door, without pro vidingrelatively intricate mechanism. However, I have provided means wherebythe locking rod 'at one side of the door may be shifted to its unlockedposition by shifting the other locking rod inwardly, and thenwithdrawing the latter rod by either the manual latch 4I or the cylinderlock 5I above referred to. To facilitate the ejection or unlocking ofone locking rod by means of the inward shifting of the other, I haveprovided a short rod or slide 6I at the inner end of the bolt actuatingmember 3. This slide is reciprocable transversely with respect to thebolt actuating member and is held in such sliding position by a bracket62. This slide is resiliently maintained in a neutral or self-centeringposition by a leaf.

spring 63 which is held at its upper end by a lug 64 at the inner end ofthe bolt actuating member, but spaced above the slide. Thus, when thelocking rod 3l is shifted to its inward position,A

indicated by dotted lines, the slide is slightly displaced, as alsoindicated by dotted lines. The locking rod 3| is held in such positionby the ball check 33 entering the recess 3Ia. In orderto open the doorfrom the outside, the locking rod. 32 is shifted inwardly by means ofthe latch 36 inward position by the ball check 33 which enters4 Thelocking rod 32 is then with- 4 drawn by inserting the key 54 and causingthel the recess 32a.

plug 5Ia to be rotated and the wedge cam 52 to engage the pin 53 andthereby withdraw the locking bolt 32 and thus permit the bolt 2v to bewith-A drawn by the rotation of either knob.

Though I have shown and described a particular construction,combination, and arrangement of parts and portions, I do not wish to belimited to the same, but desire to include in the scope of my inventionthe construction, combination, and arrangement substantially as setforth in the ap pended claims.

I claim:

1. In a lock, a pair of opposed axially aligned knobs having hubs attheir adjacent ends, a latch bolt housing located at right angles to theaxis of the knobs, a bolt means reciprocally mounted in the housing,said bolt means having at the opposite sides of its inner end laterallyextended flanges, the inner ends of the hubs having eccentric lugs, saidlugs being positioned at and adapted to engage the inner sides of thecorresponding flanges for retracting the bolt means with the rotation ofeither knob, separate locking rods reciprocally mounted in the hub ofeach knob, manual means in association with each knob for forcing itsrespective locking rod behind the inner end of the bolt means to preventretraction thereof, and other means in association with the locking rodsfor shifting one out of bolt-locking position when shifting the otherinto bolt-locking position.

2. In a lock, a pair of opposed axially aligned knobs having hubs attheir adjacent ends, a latch bolt housing located at Vright angles tothe axis of the knobs, a bolt means reciprocally mounted in the housing,said bolt means having at the opposite sides of its inner end laterallyextended anges, the inner ends of the hubs having eccentric lugs, saidlugs being positioned at and adapted to engage the innervsides of thecorresponding ilanges for retracting the bolt means with the rotation ofeither knob, separate locking rods reciprocally mounted in the hub ofeach knob, manual means in association with each knob for forcing itsrespective locking rod behind the inner end of the bolt means to preventretraction thereof, and means at the inner end of the bolt means forshifting one locking rod outwardly with the inward shifting of the otherlocking rod.

3. In a lock, a pair of opposed axially aligned knobs having hubs attheir adjacent ends, a latch bolt housing located at right angles to theaxis of the knobs, a bolt means reciprocally mounted in the housing,said bolt means having aty the opposite sides of its inner end laterallyextended ilanges, the inner ends of the hubs having eccentric lugs, saidlugs being positioned at and adapt ed to engage the inner sides of thecorresponding flanges for retracting the bolt means with the rotation ofeither knob, separate locking rods reciprocally mounted in the hub ofeach knob, manual means in association with each knob for forcing itsrespective locking rod behind .the inner end of the bolt means toprevent retraction thereof, and a self-,centering plunger reciprocallymounted transversely with respect to the bolt means and in normalalignment with the locking rods for shifting one locking rod outwardlylwith the inward shifting of the other locking rod.

4. In a lock, a pair of opposed axially aligned knobs having hubs attheir adjacent ends, a latch bolt housing located at right angles to theaxis of the knobs, a bolt means reciprocally mounted in the housing,said bolt means having at the opposite sides of its inner end laterallyextended flanges, the inner ends of the hubs having eccentric lugs, saidlugs being positioned at and adapted to engage the inner sides of thecorresponding anges for retracting the bolt means with the rotation ofeither knob, separate locking rods reciprocally mounted in the hub ofeach knob, manual means in association with each knob for forcing itsrespectivelocking rod behind the inner end of the bolt means to preventretraction thereof, means at the inner end of the bolt means forshifting one locking rod outwardly with the inward shifting of the otherlocking rod, and other manual means in association with each knob forwithdrawing the locking rod in the corresponding knob.

5. In a lock, a latch housing, a latch member movably mounted therein,operating members at the opposite sides of the housing for operating thelatch member, separate locking members at the opposite sides of thehousing, manual means in association with each of the operating membersfor forcing its respective locking member into the path of the latchmember to prevent retraction of the latter, and means in associationwith the inner portion of the latch member for shifting one lockingmember outwardly with the inward shifting of the other locking member.

6. In a lock, a latch housing, a latch member movably mounted therein,operating members at the opposite sides of the housing for operating thelatch member, separate locking members at the opposite sides of thehousing, manual means in association with each of the operating membersfor forcing its respective locking member into the path of the latchmember to prevent retraction of the latter, and a self-centering lockingmember shiftably mounted at the inner portion of the latch member and innormal alignment with the rst mentioned locking members for shifting oneof the latter outwardly with the inward shifting of the other of thelatter.

7. In a lock, a latch housing, a latch member movably mounted therein,operating members at the opposite sides of the housing for operating thelatch member, separate locking members at the opposite sides of thehousing, manual means in association with each of the operating membersfor forcing its respective locking member into the path of the latchmember to prevent retraction of the latter, means in association withthe inner portion of the latch member for shifting one locking memberoutwardly with the inward shifting of the other locking member, andother manual means in association with each of the operating members forwithdrawing the locking member in the corresponding operating member.

8. In a lock, a knob having a hub and an annular groove at the innerside of the knob around the hub, bolt means cooperating with the knob, alocking rod extending through the hub to prevent retraction of the boltmeans, said hub having a transverse slot connecting diametricallyopposite sides of the groove, a locking ring reciprocally mounted on thehub and adapted to enter the groove, and a pin extending diametricallyacross the ring through the slot and fixed to the rod for axiallyshifting the rod with the axial movement of the ring.

EUGENE V. KIDDER.

